Alexander ore



UNETEB STATES Persian cram ALEXANDER ORR, OF GliASGOlV, COUNTY OF LANARK, SCOTLAND.

PROCESS OF MAKiNG WHETE. LEAD.

SPECIFICATION forming part of Letters Patent No. 428,017, dated May 13, 1890. Application filed January 3,1888. Serial No. 259,556. (No specimens.) Patented in England November 11, 1887,110. 15,406

To aZZ 107007121 it may concern.-

Be it. known that TIALEXANDER One, a sub jectofthe Queen'of Greatliriiain and Ireland, and a resident of Glasgow, county of lianark, Scotland, have invented a new or Improved Process of Making White Lead, (for which I have obtained British ParentNo. 15,406, dated November-1], 1887,) of which the following is a specification.

My said invention has for its object. to improve and. render more expeditions that pro cess for making white lead in which the lead is exposed to the action oi acetic acid and carbonic acid.

In carrying out my invent'on I take litharge or lead oxide in a finely-gronml condition and mix it with about an equal weight of water in any suitable vessel, giving preference to a vessel which can be closed and will withstand an internal pressure of about ii \e or six pounds more than that of the atmosphere. I add a small quantity of acetic acid and inject carbonic acid into the mixture, which is kept well stirred or agitated by any suitable mechanical appliance. W hen treated in this way, the liirharg'e converted into white lead in a much shorter time than in ordinary pro- In testimony whereof I have signed my name to this specification in ihe presence of two subscribing witnesses.

ALEX NDER OER,

Witnesses:

E ennui) 1 him,

DAVED FnneUsoN. 

